September weather forecast
Umatilla, FL

September, the first month of the autumn in Umatilla, is still a tropical month, with an average temperature ranging between max 88.5°F (31.4°C) and min 73.2°F (22.9°C).

Temperature

The average high-temperature during September is a still hot 88.5°F (31.4°C), almost matching the conditions of the preceding month. Umatilla reports a consistent average low-temperature of 73.2°F (22.9°C) throughout September nights.

Heat index

The heat index value for September is calculated to be an extremely hot 105.8°F (41°C). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an estimation of the warmth sensation when considering humidity levels. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The months with the highest humidity in Umatilla are July through September, with an average relative humidity of 78%.

Rainfall

In Umatilla, in September, during 22.3 rainfall days, 4.02" (102mm) of precipitation is typically accumulated. Throughout the year, in Umatilla, there are 193.1 rainfall days, and 35.71" (907mm) of precipitation is accumulated.

Daylight

The average length of the day in September in Umatilla is 12h and 19min.
On the first day of the month, sunrise is at 7:04 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:19 am and sunset at 7:13 pm EDT.

Sunshine

In September, the average sunshine in Umatilla, Florida, is 8.7h.

UV index

In Umatilla, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.